Koko, the gorilla whose apparent aptitude for sign language endeared her to fans around the world, died in her sleep on Tuesday morning, according to the Gorilla Foundation, which oversaw her care.

WOODSIDE, Calif. (CBSNewYork/AP) — Koko, the gorilla who mastered sign language, has died. The Gorilla Foundation says the 46-year-old western lowland gorilla died in her sleep at the foundation's ...

(NEW YORK) — Koko, the gorilla who mastered sign language and became a pop-culture phenomenon, will be laid to rest Saturday in a ceremony at an animal sanctuary in Northern California where she lived ...

In several previous experiments, sign language has been taught to chimpanzees, but this is the first real attempt with a ...

SAN FRANCISCO (AP) — Koko the gorilla, whose remarkable sign-language ability and motherly attachment to pet cats helped change the world's views about the intelligence of animals and their capacity ...

Koko, a western lowland gorilla said to have mastered American Sign Language, has died aged 46, the California institute which studied her said on Thursday. "The Gorilla Foundation is sad to announce ...

Koko the gorilla who mastered sign language, raised kittens and once playfully tried on the glasses of the late actor Robin Williams, has died. She was 46. The Gorilla Foundation says the western ...

Celebrities bid farewell to the well-known ape. By Ryan Parker Koko, the gorilla who mastered sign language and became something of a pop culture staple, has died, the Gorilla Foundation confirmed.

Koko the gorilla, whose remarkable sign-language ability and motherly attachment to pet cats helped change the world’s views about the intelligence of animals and their capacity for empathy, has died ...

SAN FRANCISCO (AP) — Koko the gorilla, whose remarkable sign-language ability and motherly attachment to pet cats helped change the world’s views about the intelligence of animals and their capacity ...